sin, cosine, and tangent1

Mathematics
Tutor: None Selected Time limit: 1 Day

Find the sine of the angle in standard position in which the terminal side passes through the point (-8, -15)

Find the cosine of 30 degrees

Find the sine of 45

Find the sine of 60

Oct 20th, 2014

here 

x= -8 

y= -15

r= sqrt(8^2+ 15^2)= 17

sine= y/r= -15/17

1:     Cos30=A/H =sqrt(3)/2

2:       Sin45=O/H =1/sqrt(2) 

3:       sine 60=cos 30= sqrt(3)/2

Oct 20th, 2014

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